Unit 3 Review (Genetics and Evolution)

Which evidence supports the idea that life on Earth has continually evolved?

• evidence from layers of tree rings

• evidence from rock layers, fossils, and ice cores

• evidence gathered from melting glaciers

• evidence that the climate has changed over the past 100 years

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NGSS.MS-LS4-1

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Which would most likely increase the genetic variation in a population of organisms?

• increase in diseases

• decrease in diseases

• increase in mutations

• decrease in mutations

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NGSS.MS-LS4-4

NGSS.MS-LS3-1

Which is the best evidence for evolution?

• new rock layers containing fossils of simple organisms

• new rock layers containing fossils unlike existing organisms

• old rock layers containing fossils unlike existing organisms

• old rock layers containing fossils of complex organisms

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NGSS.MS-LS4-1

Which best explains why mammals became dominant after the mass extinction of the dinosaurs?

• They had traits that helped them adapt to environmental changes.

• They were larger than dinosaurs and ate different foods.

• They lived in different areas on Earth than dinosaurs.

• They were able to hibernate for thousands of years.

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NGSS.MS-LS4-4

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Which demonstrates how genetic variation may result from a change in the environment where an animal lives?

• A salmon swims faster as it enters colder waters.

• A snake increases its body temperature because it moves on top of a rock in direct sunlight.

• A beetle stands out to predators because it moves among plants that have colors different than its own.

• An arctic fox changes its color over time because it migrates to an area with a different climate.

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NGSS.MS-LS4-4

If a bat, an alligator, and a bird evolved from a common ancestor, what most likely can be concluded?

• They have similar anatomical structures.

• They live in the same part of the world.

• They are in the same biological classification.

• They are able to survive changes in their environments.

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NGSS.MS-LS4-2

Recent changes in species can be found in the upper layers of rock. This provides a link between which two scientific ideas?

• cell theory and the theory of evolution

• the periodic nature of the elements and cell theory

• the theory of evolution and the Law of Superposition

• the Law of Superposition and the periodic nature of the elements

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NGSS.MS-LS4-1

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Which of these would most likely happen to a species that is not able to adapt to a changing environment?

• The species would become extinct over time.

• The species would develop mutated cells.

• The species would develop resistance to disease.

• The species would change the environment.

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Some scientists think that all life evolved from a common ancestor. Which provides evidence that this may be true?

• analogous structures of organisms

• homologous structures of organisms

• extinction of many varieties of plant species

• existence of many varieties of bacteria species

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NGSS.MS-LS4-2

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Which best describes the similar function of wings in birds and butterflies?

• embryological structures

• homologous structures

• analogous structures

• vestigial structures